Double pile fabrics



(No Model.) 7 4 Sheets-Sheet 1.

S. C. LISTER & J. REIXAGH. I LQOM PORWEAVING DOUBLE PILE FABRICS.

No. 282,652. Patented Aug.'7, 1883.

Fig. l.

; WITNESSES INVENTORS Samuel Cllisfar By that flztoflz eys rg n N. PETERS PholoL'nhognpMr. Waahingon. n. c.

4 Sheets-Sheet 2.

(No Model.)

s. 0. LISTER & J. REIXAOH. LOOM FOR WEAVING DOUBLE PILE FABRICS. No. 282,652. Patented Aug. 7, 1883.

WITNESSES INVENTGRS W 8667702165 Clisier By iheir fliiorneys 17586 fiez'xac/z 4252M awm Y W222 W (No Model.) 4 Sheets-Shed 3. S; G. LISTER & J. REIXACH.

LOOM FOR WBAVING DOUBLEPILE FABRICS. No. 282,652. Patented Aug. '7, 1883.

WITNESSES mvamons W27 I ,s'amuel allister By their flltorneys Joa-ef .llezfxqlch (No Model.) 4 Sheets- Sheet 4.

S. G. LISTER & J. REI'XAOH.

LOOM FOR WEAVING DOUBLE PILE FABRICS. 'No. 282,652. Patented Aug. 7, 1883.

v 2 I e I J I LNVENTORS JamueZ alisen By ihez rflttorneys J'oaefieixach,

N4 PETERS. mo-Llnw n mr. Washinglml. D. C

UNITED STATES PATENT OF ICE.

I SAMUEL O. LISTER AND J OSE REIXAOH, OF MANN INGHAM, COUNTY OF YORK, ENGLAND. Y

LOOM FOR WEAVING D0 UBLE-PILE FABRICS.

SPEGIFICATIONforming part of Letters Patent No. 282,652, dated August 7, 1883.

Application filed March 30, 1883.

(No model.) Patented in England April .27, 1871, No. 1,117, and iii-France October 27, 1871,

To all whom it may concern: I

Be it known that we, SAMUEL OUNLIFFE LISTER and J osr': REiXAoH, subjects of the Queen of Great Britain, residing at Manningham, near Bradford, in the county of York, England, have invented certain new and useful Improvements in Looms for Weaving Double-Pile Fabrics, (for which we have received Letters Patent in England N 0. 1,117, dated April 27, 1871, and in France No. 93,124, dated October 27, 1871,) of which the following is a specification.

This invention relates to improvements in machinery employed for operating and sharpening the knife used for cutting asunder two pieces of velvet or other pile fabric woven together, face to face, at one operation in a loom, the said pieces being connected together by means of the pile-threads, upon severing which two separate and distinct pieces of pile fabric are produced, as is well understood. Machinery of this class is shown by English Patents No. 2, 129 of November 1, 1858; N o. 470 of February 11, 1868; and 2,549 of August 27, 1869. The cutting knife or blade employed for severing the pile is mounted upon a carriage working in a transverse slide, and is drawn backward and forward by means of cords. WVhen the knife comes to rest at one end of the slide, it enters between suitably-constructed sharpening-rollers, one above and the other below it. The rollers are mounted so that. they can be raised and lowered. First one roller is brought into contact with, say, the upper side of the knifeedge, and then the other with the under side of the knife-edge. \Ve make the sharpeningrollers longer than the knifeblade, and, in accordance with the improvements to which the present invention is limited, during the time that the knife is being sharpened we cause it to move endwise of the rollers, the knife-blade being causedto travel slowly from one end to the other of the roller first brought into action, and

then back again from one end to the other of the second roller. The sharpening-rollers are also made concavethat is, of larger diameter at their ends than at their middlesso as to give to the cutting-edge of the knife-blade a somewhat curved form, in order that the blade may be rounded off square-ended.

fro traversing movement to the knife to cut the fabrics asunder after they have been woven, nor means for sharpening the'knife, but consists in an organization of mechanism involving the combination of means for giving the cutting movement to the knife, with means for giving it the additional reciprocating sharpening movement along the rollers when they are respectively acting upon it.

The drawings annexed show our improvements as embodied in connection with mechanism such as that shown and described in our application No. 23,907, filed January 13, 1881, and also, as shown in said application, so much of a 100m for weaving two pieces of pile fabric face to face as is necessary to show in what position the cutting mechanism is placed in the loom to allow of its cutting the two fabrics asunder after they have been.

woven.

Figure 1 shows a longitudinal vertical sec tion of an ordinary loom used for weaving two pieces of pile fabric face to face, the position of the knife-slide in the loom being represented. There is nothing new in the 0011- struction of any ofthe parts shown in this figure. Fig. 2 is'a side view on alarger scale of that side of the loom at which the sharpening-rollers are situated, and shows the way in which the sharpening-rollers are caused torevolve, and also the way in which they are raised and lowered for the purpose before mentioned. Fig. 3 is an opposite side view of the loom, showing the way in which the slide which carries the cutting-knife receives its to-and-fro movement. Fig. 4 is a front View of the mechanism, showing the position of the wheels by which the take-up rollers receive their motion. Fig. 5 is a similar front view, with these parts removed to show the instead of being' .fabric, as is well understood.

, by cranks on knife slide-bar, and also the mechanism which causes .the lknife to traverse to and fro along this bar. Fig. 6 is a face view of the cam by which the sharpening-rollers are raised and lowered, and Fig. 7 a similar view of the double cam by which the to-and-fro traverse is given to the knife.- Fig. 8 shows a plan view of this double cam and of the slide which it moves to and fro. Fig. 9 shows a plan view, on an enlarged scale, of that end of the velvet-rail and knife slide-bar at which the sharpeningrollers are mounted. The sharpening-rollers are not shown in this figure. Fig. 10 shows a front view, on the same scale, of this end of the velvet-rail to show how the sharpening-rollers are carried by it. I

In Fig. 1, A A are the two sets of groundwarps, and B is the pile-warp. These warps are raised and lowered by heddles actuated in any ordinary manner to produce a double-pile X is the double- .0 is the batten, moved to and fro the crank-shaft D in the ordinary manner. E is the picker-shaft driven from the crank-shaft, and by which the pickerstaffs are actuated in the manner common in all ordinary looms. F is the velvet-rail or breast-beam over which the fabric passes as it is woven. G is the knife slide-bar along which the cutting-knife is slid to and fro to sever the two fabrics as they are woven. This knife slide-bar is in the same position as described in the English patent before mentioned, granted to George Davies on the 1st of November, 1858, No. 2,429. H H are the take-up rollers for conveying away the two fabrics as they are severed one from the other. In this figure is also shown the way in which we prefer to give motion to the take-up rollers; but they may be caused to revolve in any ordinary manner at a suitable speed for conveying away the fabrics as they are woven.

The crank-shaft D (see Figs. 4 and 5) is driven by a driving-belt passing over a driving-pulley, d, fixed upon it. From the shaft D motion is transmitted by a toothed wheel, D, upon it to a toothed wheel, 6, fixed upon the picker -shaft F. From the picker-shaft motion is transmitted by a train of gearing to the take-up rollers H. (See Figs. 1 and 4.) The shaft E has upon it a skew gear-wheel. (See Figs. 1 and 4.) This gears into a corresponding skew gear wheel on a shaft, e, and at the opposite end of the shaft 6 is a worm which drives a worm-wheel, e. A toothed pinion on the worm-wheel drives a toothed wheel, 0 and a pinion fast with this toothed wheel gears with a toothed wheel on the axis of the lower take-up roller, H. The upper and lower take-up rollers are also geared together by toothed wheels 6, and thus both of the take-up rollers over which the upper and lower fabrics are passed, respectively, as is usual, and as is shown in the drawings, are continuously driven.

pile fabric.

The knife g(shown in plan viewat Fig. 9) is carried by a slide, G, which can move to and fro along a groove in the knife slide-bar G, and has, as heretofore, a cord attached to each end of it. One cord, i, after being led over a guide-pulley at one end of the bar G, is attached to one side of a wheel, I, at one end of a shaft, I, and the other cord, '5 is similarly led over a guide-pulley at the other end of the bar G,

and attached to the opposite side of another wheel, 1 at the other end of the shaft I. At that end of the shaft I which is shown at Fig. 3 this shaft has upon it atoothed pinion which gears with a toothed wheel, J, which is mount ed upon a fixed stud carried bya bracket from the frame of the'machine, as shown atFig. 3. Fast with the toothed wheel J is also a pinion, J, which gears with a toothed rack 011 a bar, K, which is supported on guide-rollers which turn on fixed pins carried by the frame of the machine, as shown, so that it may be moved to and fro. It has an endwi'se to-and-fro motion given to it by adouble cam, L L. (Shown separately at Fig. 7.) On the bar are two trucks or rollers, KK". The roller K always bears against the division L of the, cam, and the other roller, K against the other division, L, of the cam. The two divisions L L of the cam are side by side fast with one another, as shown at Fig. 8, and they turn on a fixed pin carried by the framing of the machine, as shown at Figs. 3 and 8. Fast with the double cam L Lis also a toothed wheel, L". This gears with a toothed pinion, E, on the shaft E, which is driven continuously, as hereinbefore described. The double cam, in place of being formed so as simply to move the knife to and fro along its guide-bar to cut the double-pile fabric asunder and to keep the knife at rest, at one end of the bar during the time that the sharpeningrollers are acting upon it, is formed, as hereinafter explained, to first bring the knife to rest, and then (as one,of the sharpening-rollers. is brought into position to act upon it) to give to it a slight further endwise motion to cause it to travel slowly along the sharpening-roller, then again to keep the knife at rest whilethe other sharpening-roller is being brought into position to act upon it, and then to move the knife slowly back along this second sharpening-roller and again bring the knife to rest after this sharpening-roller has ceased to act upon it, and before the knife is again caused to travel along the bar G to sever the pile of the double-pile fabric.

The rising and falling motion is given to the frame which carries the sharpening-rollers by means of a cam, M, mounted at the side of the loom. (Shown at Fig. 2.) The cam turns upon a stud carried by a bracket of the frame of the machine, as shown, andhas fast with it a toothed wheel,'M, which gears with a toothed pinion, 1W, on the shaft E, and is driven by it at the same speed as the double cam L L. They both make one turn for every three revolutions of ICC I .I V

the shaft E. A roller on'one arm of a weighted lever, N, rests upon the top of the cam M, (see Fig, 2,) and the other arm of this lever is coupled to a rod, 0, which passes downward from the small frame that carries the sharpening-rollers O. The rod 0 passes down through a vertical slot in the velvet-rail F, and through a guide, F, fixed to. the bottom of this rail, as shown at Fig. 10, and is thereby guided in its upward and downward movement. The sh arpening-rollers are caused to revolve continuously by an endless cord, P, which, as shown at Fig. 2, passes over a small grooved pulley on the axis of each sharpening-roller, and also over a grooved driving-pulley, It, the axis of which is carried by a small bracket from the frame of the machine, as shown. The driving cord P is kept uniformly in tension by being passed over guidepulleys on a-frame, S, which at one end can turn on a pin, S, carried-by the frame, and at its other end is drawn upward by the action of a spring, TL

The grooved driving-pulley R has upon its axis and on the outer side of the frame a toothed wheel, R, which gears with p a toothed wheel, D, on the crank-shaft D, and is thereby caused to revolve continuously and to impart a continuous revolving motion to both of the sharpening-rollers.

The action of the cams for giving motion tothe knife and to the frame which carries the sharpeningrollers is as follows, and will be readily understood by reference to the separate views of the cams shown at Figs. 6 and 7: WVhile the roller K on the rack-bar K is kept against that part of the cam-division L which is between the radial dotted lines i j, and the roller K is kept against that part of the camdivision L which is between the radial dotted lines 2" j, Fig. 7, the rack-bar is moved endwise, first in one direction and then in the opposite direction, and the knife is thereby caused to travel along the knife-barfirstin one direction and then back again in the opposite direction to its former position, in which position it is between the sharpening-rollers, one roller being above it and the other below it. Next, during the time the portions of the cam-divisions between the linesj and e and j e pass the rollers K and K respectively, the knife is brought to rest, as these parts of the double cam are concentric with the cam-axis. Next, when the parts of the cam-divisions between the lines ef and ef pass the rollers K and Y, respectively, the knife will have a slight further endwise motion given to it, and at the same time the portion of the cam M between the corresponding lines, 6 on Fig. 6 is acting upon the lever N, depressing the frame which carries the sharpening-rollers, and bringing the upper sharpening-roller into contact with the top side of the knife. Next, when the portions of the double cam L L between the lines f g and f g are passing the rollers K 1?, the knife remains at rest, as these parts of the cam are concentric, and the portion of the cam M between the corresponding lines, f 9 (marked upon it,) acts upon the lever N, raising the frame carrying the sharpening-rollers, and bringing the lower sharpening-roller against the under side of the knife. The portions of the cams L ILM between the lines 1. and h and 7:1 next come into action, and the knife is thereby caused to travel back to the, position fromwhich it was moved when acted upon by the top roller, and during this return movement the lower sharpening-roller is kept against the bottom of the knife. The portions of the cams L L M between. thelines h t and h and 7f 1' next come into action, The knife is now held at rest, as these portions of the cam L L are concentric, and the.

frame which carries the sliarpening-rollers is held in its central position, so that neither sharpening-roller touches the knife. The knife, by its reciprocation in contact with the rollers, has now been sharpened and is ready to be drawn along the knife bar-slide to cut the pile of the double fabric.

As will be seen at Figs. 9 and 10, the sharpening-rollers are made longer than the width of the knife, and they are also made somewhat concave, as before stated.

As will be seen at Figs. 2 and 9,-the knife when about to be sharpened is resting upon a small bar, W, upheld at each end by a light spring, XV, so that when the upper sharpening-roller is brought down onto the knife the bar XV may yield slightly and keep the knife pressed with a uniform pressure against the roller. Similarly when the bottom sharpening-roller is brought against the bottom of the knife the knife can turn upward, and is held against the roller with a uniform pressure by the small coiled springs G which bear upon the top of the knife and tend to turn it down ward.

W" is a fixed bar or straight-edge, which serves as a guide for the knife to rest on and keep it at the required level as it moves away from the sharpening mechanism to the edge of the pile fabric.

We do not herein claim subject-matter such as covered by the claims of our aforesaid application, No. 23,907, but restrict our present claims'to mechanism including means whole by the knife is caused tomove endwise of the sharpening-rollers while being'acted upon by them e claim as of our own invcntion- 1. The combination of the knife and mechanism for actuating it to sever the fabric with the sharpening-rollers, means by which they are aetuatedto bring them alternately into contact with the opposite sides of the knife, and means by which the knife is caused to move slowly endwise of and in opposite direc tions along said rollers respectively, substantially as and for the purpose hereinbefore set forth.

IIO

In testimony whereof we have hereunto subscribed our names.

SAMUEL OUNLIFFE LISTER. JOSE BEIXAOH.

Vitncsses:

WILLIAM THORNTON, ARTHUR TETLEY PARKINSON,

Clerks 10 llfcssrs. Killick, Hutton d2 Wm, 80-

lie 5101's, Bradford. 

